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Heritage Series Radius

Custom wood radius Windows with 1/4 bell-tops & a long leg on one side, 1-15/16" flat casing, and K-Kron II high performance exterior finish in Beige. (The rest of the project includes Ultra Series aluminum clad products.)

Glass

Glass Terminology (expand for details -->)

LoE²-270

LoE²-270 glass delivers year-round comfort in most types of weather. Offering a balance of high clarity and low solar heat gain, LoE²-270 is standard in most Kolbe products. In summer, it rejects the sun’s heat and damaging UV rays. In winter, it reflects heat back into the room.

LoE³-366

For warm climates, LoE³-366 delivers a balance of solar control and high visibility. This coating helps provide protection of fading, blocking up to 95% of the sun’s damaging rays.

When the weather turns frigid, LoE-180 glass is the perfect cold remedy. It keeps homes warmer and more comfortable by blocking heat loss to the outside and letting the sun’s heat stream in to increase solar heat gain.

Argon Gas

Argon gas is a colorless, odorless, non-toxic, naturally-occurring element that is inert, meaning it will not react with other elements or gasses. Because argon gas has a thermal conductivity 30% lower than air, the use of argon gas in a LoE coated insulated glass unit allows it to provide for an incremental improvement to the overall U-factor of the unit. For increased energy efficiency, argon is supplied, at no additional cost, in all LoE coated insulated glass units, with the exception of those units with glass dimensions less than 14" x 14" or units that require capillary/breather tubes due to being shipped over or installed in high altitude elevations. Units constructed without argon gas will have higher U-values.

High altitude situations occur when Kolbe double pane insulated glass units are shipped over or installed in areas that begin at 5000 feet above sea level. For triple pane insulated glass units, high altitude begins at 3500 feet above sea level. To find the energy performance for units in high altitude situations, use our energy database and select Air as the fill option for double or triple pane glass.

Thermal Efficiency

Inert gas dissipates over the life of the insulated glass unit. Kolbe does not warrant the amount or percentage of argon present in insulating glass or a specific level of unit thermal efficiency at any time after manufacture. Visit our energy database to select and view your specific window and its listed energy performance values.

Thermo-Edge Spacers

Kolbe’s standard glass offerings are complemented by a state-of–the-art, stainless steel spacer bar system on most units. The advanced design of this system incorporates a stainless steel spacer with airtight bent corners and a dual-seal construction of compressed polyisobutylene (PIB) and silicone. Desiccants are contained in the spacer to eliminate the potential for moisture. These features combine to reduce the thermal transmission through the edge seal, creating better energy performance and increasing the roomside glass temperature while reducing the potential for condensation at the sash to glass interface as compared to aluminum spacer designs. Thermo-Edge spacers are one of the many quality details that define Kolbe windows and doors. Thermo-Edge spacers are not available on very small radius units, units with ½" insulated glass, with the Champagne or Dark Bronze Anodized spacer option, units with "pencil" bar grilles-in-the-airspace, or true divided lites. Available in stainless steel (standard) and black painted.

NOTE: LoE²-270 and other LoE coatings are trademarks of Cardinal IG; visit the Cardinal IG website for in-depth information about glass.

Double Pane Insulating Glass with LoE²-270

Standard in most Kolbe windows and doors

Achieves energy efficiency across the various climate zones in the U.S.

Double pane insulating glass

LoE²-270 (other LoE coatings avaialble)

Argon gas (for exceptions, see Glass Terminology)

Thermo-Edge, stainless steel spacer bars

ThermaPlus

ThermaPlus is an optional, additional interior coating applied to help meet the strictest energy requirements and provide protection against heat loss and UV damage.

Double pane insulating glass

LoE²-270 (other LoE coatings available)

Argon gas (for exceptions, see Glass Terminology)

ThermaPlus coating on indoor surface of the glass

Thermo-Edge, stainless steel spacer bars

Laminated Glass

The benefits of choosing laminated glass include safety, security, sound control and the ultimate in UV blockage.

Double pane insulating glass

LoE coating options

Argon gas (for exceptions, see Glass Terminology)

Thermo-Edge, stainless steel spacer bars

Laminated glass - two pieces of glass fused together with a plastic interlayer

NOTE: Either one or both pane(s) may be laminated. If products must meet specific impact or design pressure ratings, they may or may not incorporate laminated glass, and may require construction and structural modifications as well.

Tempered Glass

Tempered glass is standard in doors for safety and available in windows to meet specific building codes. If broken, tempered glass shatters into small fragments rather than large, sharp shards.

NOTES: Other patterns may be available by special order. Rain is not available with PDL bars on the obscure glass surface. Ratings for products with obscured or wired glass and/or stained glass shall be deemed to be equivalent to the ratings for clear glass (NFRC 200 Section 4.5.G).

Neat Glass

You may request Neat® glass, which harnesses the sun’s UV rays to loosen dirt so water can rinse it away, leaving windows virtually spotless. A special sputter-coating process makes the exterior glass surface ultra smooth, so the water "sheets off" more readily than it would on uncoated glass, allowing you to spend less time cleaning.

Preserve Protective Film

NOTE: Not available on single-glazed units, units with true divided lites or other small insulating glass units, or some types of decorative glass. Contact your local Kolbe dealer for more information.

Divided Lites

The PDL System for Ultra, Heritage & Classic Series Products

The Performance Divided Lite (PDL) system uses a single insulating glass unit, which offers much better U-factors than true divided lite units. This is due to the large, unobstructed thermal break created by airflow within the insulating glass unit.

Wood bars are adhered to the interior of the insulating glass unit*

Aluminum, beveled-profile bars are adhered to the exterior*

Champagne-colored bars are held within the insulating glass unit

*Some intricate designs and coastal applications may require a composite material for the exterior PDL bars and are not coated with fluoropolymer finish.

PDL bars

Exterior & interior bars are finished to match the exterior or interior of the window or door unit

NOTE: Double pane insulating glass have one bar within the insulating glass unit, as shown above. Triple pane insulating glass have two bars, one in each airspace. Limitations may apply, especially to curved bars.

True Divided Lites for Heritage Series Products

True divided lites (TDL) gives each unit authentic traditional divided panes often found in historical projects. It is available only on Heritage Series products.

Interior removable wood grilles offer aesthetic flexibility, as well as easy cleaning. They are available only on wood products.

Construction & Benefits

Built with full surround frame and bars that interlock at the joints for stability

Applied to interior of window using exclusive hidden clip system

Offer the ability to change styles by removing the grilles

Can easily be removed to clean the glass

Species: pine (standard), other wood species (option)

Bar Profiles & Widths

Interior bar profiles: beveled (standard), and ovolo (option)

Optional bar widths: 7/8", 1-1/8", and custom

Factory Finishes

Prefinishing available to match interior finish of entire unit (option)

NOTE: If ovolo bar profile is chosen, glazing beads will be ovolo to match. If a finish is requested, it will be applied to both sides of the grille; i.e., the sides seen from the interior and exterior will be finished the same. Primer is not available on grilles.

*For triple pane units, the bars are held within the exterior airspace. GIA are not available on Ultra or Heritage Series Sterling Double Hungs, Studio Units, or Sliding Patio Doors with triple pane glass.

Wood Species

Wood Species

NOTE: Because wood varies by nature, the actual wood used in our products may vary in grain and color from that shown here.

NOTE: Because wood varies by nature, the actual wood used in our products may vary in grain and color from that shown here. Selections should be made based on actual samples.

Wood Option - FSC Certified

Kolbe's wood products are constructed of pine as standard, for a stable product that will accept many beautiful finishes. Other wood species are available, as shown above.

Kolbe offers FSC COC certified wood for many of its products. This means it is harvested from well-managed forests and each entity that handles the wood complies with the social, economic and ecological values defined by the FSC. Learn more about FSC Certification and Kolbe's other Green & Sustainability initiatives.

Exterior Finish/Colors

Standard Finish - Primer

Most Heritage Series products are coated on the exterior with latex primer, ready for your choice of topcoat.

K-Kron II Exterior Finish

K-Kron II colors are available for most Heritage Series wood products and the panels of Fiberglass doors. It is a three-step process: 1) Wood pieces are immersed in a treatment for protection from water, insects and fungus, 2) A high performance urethane primer is applied to help seal the wood and provide a tough bonding surface, 3) the topcoat finish is applied using an airless, control-spray system that ensures complete, consistent coverage. (Learn more). Kolbe offers an extensive array of colors, as well as custom colors.

Interior Finish/Colors

Unfinished

Factory-Applied Primer

Primer prepares your windows and doors for a beautiful, painted finish to be completed on the job site

NOTE: Limitations may apply; contact your local Kolbe dealer for more information.

Factory-Applied Clear Coat or Stain

Double Clear Coat

Let the natural beauty of the wood show with a durable clear finish. Note that when a double clear coat is requested without stain, a durable, solvent-based finish will be used.

Stain

Water-based stain is applied, then two coats of clear, water-based satin finish are applied to help protect the stain. The wood is lightly sanded between the coats. Custom stain colors may be requested.

Cherry

Chestnut

Coffee Bean

Ebony

Library Red

Light Oak 998

Red Wheat

Spiced Walnut

Sunset Oak

Wheat

Double Coat Clear

NOTE: On-screen images of interior finishes may vary from actual colors. Stain colors shown on pine. Selections should be made based on actual color samples. Limitations may apply; contact your local Kolbe dealer for more information.

Factory-Applied Paint

After being factory-primed, a topcoat of water-based, acrylic type latex paint is applied. Custom colors may be requested.

Bright White

Ultra Pure White

Abalone

Silk

Ivory Tusk

Natural Cotton

Beige

NOTE: On-screen images of interior finishes may vary from actual colors. Selections should be made based on actual color samples. Limitations may apply; contact your local Kolbe dealer for more information.

Factory-Applied Wire Brush Finish

Wire brushing creates a rugged texture and adds character to wood units

The perfect option to complement any rustic-style home

NOTE: Due to the nature of wire brushing certain limitations apply; contact your local Kolbe dealer for more information.

Energy Data

Energy Data for Radius & Geometric Units

Radius, Radius-Top, and Geometric windows are built with a profile to match other products, usually Casements, Double Hungs or Doors. To find energy data, please go to the detail page of the matching product and find the appropriate size, operation type, and other details such as glass type & coatings.

FSC Certification

Kolbe® has been granted Forest Stewardship Council (FSC) Chain-of-Custody Certification, as have many of our distributors.

The FSC is an international organization dedicated to promoting responsible management of the world's forests. FSC certification ensures that the wood in products come from well-managed forests which meet the social, economic and ecological needs of present and future generations. Chain-of-Custody is the path taken from the forest to the consumer – including each stage of transformation, manufacturing, storage and transport involving a change of ownership of the material or product.

Independent certification bodies assess chain of custody operations against FSC standards, review a company's qualifications, and award FSC certificates when operations are in full compliance. Certificates are valid for five years; however, according to FSC policy, the third party certification body must verify continued compliance. Kolbe has been awarded certification through Scientific Certification Systems, Inc. (SCS), which will conduct surveillance audits to reconfirm Kolbe's compliance on an annual basis.

Kolbe Products Available with FSC Certified Wood

FSC certified wood is an option on many Kolbe window and door products. Wood species available include alder, cherry, fir, mahogany, maple, oak, pine, walnut and other wood species. These products will be constructed using solid or edge-glued material, except for radius units. Note that some FSC-certified product may contain less than 1% non-FSC-certified wood components.

Standard and impact performance Kolbe products available with this option include:

Heritage Series windows and doors (wood interior and exterior, includes Craftsman doors and Old World Classic double hungs)

FSC certified products can contribute points toward certification for LEED, Green Globes, and other green building programs. Kolbe will be happy to help architects and builders demonstrate their commitment to the environment by offering FSC-certified wood. By relying on certified architects and builders, homeowners can ensure that their project is built true to green initiatives.

Finish Performance

K-Kron II Finish Performance

High performance finish

Resists ultraviolet deterioration and chalking, chemical attack, as well as damage from salt, wind, sleet and snow

Before assembly, wood pieces of the window or door are immersed in a treatment with both an insecticide and a fungicide -- helping the exterior wood surfaces resist decay. This treatment meets standards set by WDMA I.S.4-2000.

The windows or doors are assembled. Before installing the glass, two coats of a specially-formulated urethane primer by Akzo Nobel is applied -- helping to seal the wood and provide a bonding surface for the final topcoat. The primer is applied using a controlled-spray process which follows WDMA T.M. 11-2000 guidelines.

Finally, a high performance urethane topcoat is applied. An airless, multi-step, controlled-spray system ensures complete, consistent coverage of the exterior wood surfaces. The result? Beautifully protected windows and doors.

Includes definitions and illustrations of various window and/or door components, operating & maintenance procedures for Kolbe products, cleaning products, reinstallation of removable sash, and care of hardware. Also includes frequently-asked questions about windows and/or doors, as well as information about condensation in relation to windows and doors.